Properties of the Number 31842

Thirty-One Thousand Eight Hundred Forty-Two

Basics

Value: 31841 → 31842 → 31843

Parity: even

Prime: No

Previous Prime: 31817

Next Prime: 31847

Digit Sum: 18

Digital Root: 9

Palindrome: No

Factorization: 2 × 3 ² × 29 × 61

Divisors: 1, 2, 3, 6, 9, 18, 29, 58, 61, 87

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 111110001100010

Octal: 76142

Duodecimal: 16516

Hexadecimal: 7c62

Square: 1013912964

Square Root: 178.4432682955566

Classification

Fibonacci: No

Bell Number: No

Factorial Number: No

Regular Number: No

Perfect Number: No

Special

Kaprekar Constant: No

Munchausen Constant: No

Armstrong Number: No

Kaprekar Number: No

Catalan Number: No

Vampire Number: No

Taxicab Number: No

Super Prime: No

Friedman Number: No

Fermat Number: No

Cullen Number: No

OEIS Sequences

Coordination sequence for root lattice B₃. A22145

Triangle read by rows: T(n, k) is the number of walks of length n on the Z X Z grid with unit steps in all four directions (NSWE) starting at (0, 0), and ending on the vertical line x = 0 if k = 0, or on the line x = k or x = -(n + 1 - k) if k > 0. A379822

a(n) = ∑_{i,j,k in Z and i² + j² + k² <= n} i² + j² + k². A14203

Smallest number·such that φ(x) = φ(x(n)), where x(n) is the n-th arithmetic derivatives of·and·is not equal to x(n). A246775

T(n,k)=Number of nXk 0..1 arrays with every element unequal to 0, 1 or 2 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero. A317764

Numbers k such that the period of the continued fraction for sqrt(k) contains exactly 74 ones. A31842